Cub Cadet OHV Series Riding Lawn Mower Instruction Manual

OHV Series Riding Lawn Mower
Instruction Manual

G22 769-11858C
Stanley Black & Decker Outdoor GmbH
Saarbrücken
Germany

OHV Series Riding Lawn Mower

Use of this document

As user of this unit, read these operating instructions through carefully before using the unit for the first time. Comply with the operating manual and keep it for subsequent use. Never allow children or other people who do not know this operating manual to use the mower.
Persons younger than 16 years of age must not use this unit – beyond this the minimum age of users is defined by local regulations.
This manual includes safety instructions which
– point out dangers in connection with the engine,
– indicate risks of injury,
– show how the risk of injury can be avoided or reduced.
The safety instructions in this manual are identified as follows:
Danger!
Denotes impending danger. Non-observance of this warning may result in death or extremely severe injuries.
Caution!
Denotes a dangerous situation. Non-observance of this warning may result in slight injury or damage to property.
Note
Denotes application tips and important information.
Specifications on the engine housing Fig. 10
These specifications are very important for subsequent identification when ordering spare parts and for customer service.
Enter all engine specifications in the box (fig. 11).

For your safety

Note
In general the term “unit” is used in the following. The engine can be installed in different units.
Danger!
Follow all safety and operating instructions in the operating manual for the unit on which this engine is mounted.
Risk of explosion and fire!
Petrol and petrol vapours are extremely flammable and explosive. A fire or an explosion may result in serious burns or fatalities. If petrol gets onto your body or clothing, wash skin immediately and change clothing.
– Before refuelling, switch off the engine and leave to cool down for at least two minutes before opening the fuel cap.
– Fill up the tank outdoors or in a well ventilated area only.
– Use authorised fuel containers only.
– Never fill up a petrol can in a vehicle, tractor or on a trailer with plastic panelling. Always fill a petrol can on the ground and at some distance from the vehicle.
– If possible, take motorised units out of the heavy goods vehicle or the trailer and refuel on the ground. If this is not possible, fill  up these units with a petrol can instead of directly with the petrol pump hose.
– Always place and maintain the fuel hose on the edge of the filler neck on the tank or petrol can until refuelling is complete. Do not use the locking lever for con- tinuous filling.
– Do not overfill the tank. Fill the tank until approx. two centi- metres below the rim of the filler neck to allow the fuel to expand.
– Keep the fuel away from sparks, naked flames, warning lights, heat and ignition sources.
– Never refuel units in closed rooms, as flammable vapours will form.
– Do not smoke.
– Frequently check fuel lines, tank, fuel cap and connection parts for cracks and leaks. If required, replace.
– Before starting the engine, ensure that the spark plug, exhaust, fuel cap and air filter have been attached.
– Do not start the engine without installed spark plug.
– Fuel has been spilled, wait until the fuel has evaporated before starting the engine.
– When operating units, do not tilt the engine or the unit to such an extent that fuel can run out.
– Do not use the choke to stop the engine.
– Transport units with empty tank only.
– Keep petrol or units with full tank away from heaters, ovens, hot water boilers or other equipment which feature warning lights or other ignition sources, as these may ignite petrol vapours.
Risk of explosion and fire!
Sparks are generated when the engine is started. These sparks may ignite flammable vapours in the vicinity. This may result in an explosion or fire.
– Do not start the engine near damaged, gas-operated equipment.
– Do not use any pressurised starting aids, as their vapours are flammable.
Risk of asphyxiation!
Engines release carbon monoxide, an odourless and colourless toxic gas. Inhalation of carbon monoxide may result in dizziness, fainting or death.
– Start and run the engine out- doors only.
– Do not start or run the engine in closed rooms, even if doors and windows are open.
Risk of injury!
If the engine is started unintentionally, this may result in serious injuries, a fire or an electric shock.
– Before carrying out any work, e.g. settings or repairs, always remove the spark plug terminal and keep it away from the spark plug.
– For ignition tests, use an authorised ignition tester only.
– Conduct an ignition test on a spark plug which has been removed.
Risk of burns! Risk of fire!
A running engine generates heat. Engine parts, especially the exhaust, are extremely hot. Do not touch, otherwise you could receive severe burns.
Flammable objects such as leaves, grass, bushes, etc. may catch fire.
– Do not touch the exhaust, cylinder block or cooling fins until they have cooled down.
– Keep children away from a hot or running engine.
– Remove flammable objects from the vicinity of the exhaust and cylinder.
Risk of electric shock! Risk of fire!
Ignition sparks may cause a fire or electric shock.
Risk of injury!
Rotating parts may touch or catch hands, feet, hair, clothing or clothing parts. This may result in serious injuries.
– Operate the unit with installed guards only.
– Keep hand and feet away from rotating parts.
– Before starting work, tie back long hair and remove jewellery.
– Do not wear loose-fitting clothing, hanging strings or parts which could become caught.
– Directly connected components, such as cutters, fan impeller, drive parts, etc., must be attached securely.
Risk of electric shock if engine has an electric starter!
When the ignition is switched on and the engine is running, never touch the electrical cables or components. You may receive an electric shock.
Risk of injury! Damage to the unit!
Do not change the engine settings which were preset at the factory.
Symbols on the unit
Safety instructions and warning instructions, illustrated with symbols or pictograms, can be found on the engine. The symbols have the following meanings:
Caution! Warning – danger source.
Before switching on the unit, read the operating instructions!
Warning – hot surface!
Warning – toxic vapours!
Petrol is flammable!
Use unleaded fuel!
Do not use the unit in the rain!
Ensure these symbols mounted on the unit remain legible.
Replace damaged or illegible symbols.

About the engine

Various models are described in these operating instructions.
Graphical representations can vary in detail from the appliance which has been bought.
Compare fig. 1 with your unit and make sure you know where the different controls and regulators are located.

Fig. 1

1. Exhaust

2. Oil draining valve

3. Electric starter (depending on model)

4. Finger guard

5. Air filter

6. a) Spark plug
   b) Spark plug lead

7. Carburettor

8. Oil filter

9. Oil filler cap/dip stick

10. Starter handle (depending on model)

Operating instructions

Checks to be carried out before operating the unit Recommended oil grades
Caution!
The unit is delivered without fuel and with oil in the engine. If the engine is operated without adequate oil, the engine may be seriously damaged. This damage is excluded from the warranty.
Before starting the engine, check the oil level and top up if required.
Do not overfill. The oil tank has a capacity of approx. 1.4 litres. Use 4-stroke oil of classification SJ or higher. Select the viscosity of the oil from the following table depending on the outside temperature:

SAE 10W-30 is recommended for general use in the normal temperature range. If single viscosity oil is used, a viscosity should be selected from the table corresponding to the average temperature in the area of use.
Caution!
If an inferior oil or an oil for 2-stroke engines is used, the service life of the engine may be damaged.
Checking the oil level
Caution!
When checking the oil, ensure that the unit is on a level surface and that the engine is switched off.
Always clean the area around the dipstick before removing the dipstick (fig. 3).
Fig. 2

• Unscrew the oil filler cap (1) and wipe the dip stick clean.
• Insert the dipstick into the inlet nozzle and tighten.
• Pull out dipstick again and check oil level. If the level is too low, slowly pour in a little oil up to the upper “max” mark on the dip stick.
• Before starting the engine, firmly screw in the dip stick.

Caution!
Do not pour in too much oil. If the engine is overfilled with oil, this may result in engine damage, smoke formation, starting difficulties or sooted spark plug.
Recommended fuels
Danger!
– Under certain conditions petrol is extremely flammable and explosive.
– Only refuel in a well ventilated environment with the engine switched off. Do not smoke near the tank or where fuel is stored and extinguish all ignition sources.
– Do not overfill the petrol tank (there must be no fuel in the filler neck). After refuelling, ensure that the tank cap is closed and secured.
– When refuelling, ensure that you do not spill any fuel. Spilled fuel or petrol vapours may ignite. If fuel has been spilled, ensure that the area has dried before restarting the engine.
– Avoid repeated or prolonged skin contact and vapour inhalation.
Risk of engine damage!
– Do not mix fuel and oil.
– Use clean, fresh and unleaded fuel only.
– Use fuel with an octane number of 87 or higher only.
– Do not use fuel of specification E85/E15!
– Only store fuel in quantities that can be used within 30 days.
– Do not leave any fuel in the tank for longer than 30 days without stabiliser – otherwise the guarantee/warranty may be voided.
– Ensure that no dirt, dust or water gets into the tank.
Checking the petrol level
Caution!
Before refuelling, leave the engine to cool down for at least two minutes.
Follow the instructions in the unit operating manual with regard to checking the petrol level and filling up.
Fig. – see unit operating manual

• Before removing the fuel cap and refuelling, clean the area around the filler neck.
• Fill the tank up to approx.  2 centimetres below the neck of the inlet nozzle or until the fuel has reached the maximum level according to the indicator (depending on model), thereby allowing the fuel to expand.

Starting the engine
Fig. 4
Danger!
Keep hands and feet away from moving parts. Do not use any pressurised starting aids. The vapours are flammable.
Danger!
Follow all operating instructions in the operating manual for the unit on which this engine is mounted.
Notes
– Some models have no throttle.
The speed is automatically set.
The engine always runs at optimum speed.
– Some models have no choke.
The engine is automatically set to the particular starting process.
– It is not necessary to use the choke if the engine is warm or the ambient temperature is high.
– Leave the engine to warm up for several minutes before working with the unit.
Switch off all drive units, place the drive in neutral (N) and apply the parking brake (if available).
Set throttle (fig. 4b) to .
If the engine is cold, pull out the choke (fig.4a) or set the throttle to (fig.4b).
Starting with the electric starter (depending on model)

• Disconnect charger from power supply and appliance.

Turn ignition key (fig. 4c/4d) to until the engine is running (start attempt max. 5seconds, wait 10seconds before the next attempt).
Starting with the hand starter (depending on model)

• Set the ignition key (fig. 4c/4d) to position .
• Pull gently on the starter handle (10, fig. 1) until it begins to resist.

Then pull quickly and forcefully to overcome the compression and prevent a backlash. If required, repeat.

Caution!
Do not let the starter handle spring back against the engine. Slowly guide it back to prevent damaging the starter.
When the engine has started

• set the ignition key to .
• Slowly push the choke back in.
• Return the throttle until the engine runs smoothly.

Stop the engine
Fig. 4
 Switch off all drive units, place the drive in neutral (N) and apply the parking brake (if available).
 Move the throttle to the middle position.
 Let the engine run for approx. 20 seconds.
 Turn the ignition key to /0.
 Remove the ignition key.
 Before leaving the unit, apply parking brake (if available).

Maintenance/cleaning

Danger!
Before carrying out any work, e.g. maintenance and cleaning work, leave the engine to cool down.
Remove the ignition key.
To prevent the engine from starting unintentionally, always remove the spark plug terminal.
Caution!
– The engine has been set optimally by the manufacturer with respect to power and consumption. Any change to these settings may be made by the manufacturer or authorised technicians only.
– If the engine has to be tilted in order to transport or inspect the unit or remove dirt, always ensure that the spark plug is face up when the engine is tilted, otherwise the engine may be damaged by fuel or oil.
– Empty the fuel tank before transporting the unit on a vehicle.
– Spare parts must fulfil the requirements laid down by the manufacturer.
– You should therefore only use original spare parts or those which have been approved by the manufacturer. Repairs must only be carried out by a specialist
workshop.
To maintain a constantly high power, it is essential to inspect and re-adjust the engine on a regular basis. Regular maintenance ensures a long service life. The required maintenance intervals and the type of maintenance work to be carried out are indicated in the following table. The intervals according to operating hours or other times/dates should be observed according to which occurs first. If the engine is operated under difficult conditions, more frequent maintenance is required.
At the end of the season the unit must be checked and serviced by a specialist workshop.

Maintenance schedule

Maintenance tasks| before use| after the first
5 operating hours| once a seasonor every 25 hours| once a season
or every 50 hours| once a season
or every 100 hours
---|---|---|---|---|---
Check engine oil| | | | |
Change engine oil| | | | |
Changing oil filter| | | | |
Check spark plugs| | | | |
Service spark plugs| | | | |
Clean exhaust area| | | | |
Clean engine cover| | | | |
Check the air filter| | | | |
Service air filter| | | | |
Change fuel filter| | | | |
Clean cooling fins of the engine| | | | |

1. If a heavy load or at high ambient temperatures
2. If operating the unit in a dusty environment, service more frequently.

Checking the oil

• Before starting the engine, always check the oil level.
• Ensure that the correct oil level is always maintained. See “Checking the oil level”.

Changing oil and oil filter
Danger!
– Waste engine oil may cause skin cancer if it comes into contact with the skin frequently and for a prolonged period. Even though this is unlikely, provided waste oil is not handled daily, it is advisable to wash hands as soon as possible with soap and water after working with waste oil.
– Drain the oil while the engine is still warm but no longer hot (the oil drains quickly and com- pletely).
– If the unit has to be tilted to drain the oil, first run the engine until the fuel tank is empty.
Note
Always dispose of waste oil/oil filters according to the applicable environmental protection regulations. It is recommended to take the waste oil in a leakproof container to a waste oil collection centre. Do not dispose of with residual waste or pour onto the ground and leave to seep away.
Changing the oil
Fig. 5

• Place unit on a flat surface and secure to prevent it from rolling away.
• Remove the oil filler.
• Drain the oil into a suitable container by:
  – Remove the cover flap (2) on the oil draining valve (1).
  – Turn the oil draining valve (1) 1/4 counter clockwise and pull it carefully forwards at the same time.

Note
If necessary, an optional oil draining hose can be pushed on the oil draining valve.
– Close the oil draining valve again. Push in the oil draining valve and turn clockwise with an 1/4 turn to close.

• Fill the oil tank with the recommended oil and check the oil level.
• Re-attach the oil filler cap.

Changing the oil filter
Fig. 6

• Drain oil – see “Changing the oil”.

• Close the oil draining valve again.

• Unscrew oil filter.

• Apply fresh oil to the sealing ring of the new oil filter.

• Installing new oil filter
  – Screw on oil filter by hand until the sealing ring is situated on the engine housing.
  – Tighten oil filter to 10 – 12 using a special oil filter wrench or tighten the oil filter by hand another 1/2 to 3/4.

• Pour in oil and re-attach filler cap – see “Changing the oil”.

•  Start engine and leave running briefly.

• Switch off engine and leave to cool down.

• Check oil filter for leaks.

• Check oil level and correct if required – see “Checking the oil level”.

Servicing the air filter
A dirty air filter restricts the air flow to the carburettor. To prevent the carburettor from malfunctioning, the air filter should be serviced regularly. In an extremely dusty
environment more frequent maintenance may be required.
Danger!
Never clean the air filter with petrol or solvents with a low flash point. There is a risk of fire or explosion.
Caution!
Never run the engine without an air filter. Otherwise the engine may be damaged or subject to increased wear.
Note
The paper filter cannot be cleaned.
Fig. 7

• Loosen both wing nuts (1) and remove the air filter cover (2).
• Remove the complete air filter (3).
• Remove the foam prefilter (4) from the paper filter (5).
• Replace dirty or damaged paper filter (5).
• Clean foam prefilter (4), replace if damaged.

To clean the foam prefilter, remove it from the paper filter and clean with a solution of household detergent and warm water. Dry it thoroughly before reinstalling.
Note
Never wet the foam prefilter with oil.

• Completely assemble air filter and correctly place the round opening on the intake nozzle (6).
• Attach air filter cover.
• Retighten both wing nuts (1) hand-tight.

Servicing the spark plug
Danger!
Leave the engine too cool down.
Conduct an ignition test on a spark plug which has been removed. Do not start the engine without installed spark plug.
To ensure that the engine runs correctly, the gap between the electrodes on the spark plug must be set correctly and free of contaminants.
Figs. 8 and 9

• Remove the spark plug terminal(1) and unscrew the spark plug(2) with a spark-plug wrench.
• Visually check the spark plug. Replace the spark plug if it is clearly worn or the insulator is damaged.
• Clean the spark plug with a wire brush if it is to be used again.
• Measure the gap between the electrodes with a feeler gauge. If required, re-adjust the gap by slightly bending the side electrode. The gap between the electrodes should be 0.60 – 0.80 mm (fig. 9).
• Check that the sealing ring on the spark plug is in good condition, then screw in the spark plug by hand to prevent damage to the thread.
• When the spark plug is handtight, tighten with the spark-plug wrench.

Caution!
Do not tighten the spark plug too tightly. Observe the following values for tightening the spark plug with a spark-plug wrench:
– new spark plug maximum 1/2 revolution
– used spark plug maximum 1/8 – 1/4 revolution.
An incorrectly tightened spark plug may become very hot and damage the engine.
Servicing the fuel filter
This maintenance work may only be performed by a service centre according to maintenance schedule.
Cleaning the engine
If the engine has already been running, leave it to cool down for at least one hour before cleaning. Regularly remove accumulated dirt from the engine. Clean the finger
guard and the area around the exhaust. Use a brush or compressed air.
Caution!
Do not clean the engine by spraying it with water, as the fuel may be contaminated. Water from a garden hose or high-pressure cleaner may penetrate the exhaust opening and damage the engine.
Danger!
Dirt which has accumulated around the exhaust may catch fire. Check and clean the area before using the unit.

Storage

Note
If storage is for longer than 30 days, a stabiliser can be added to the fuel. Contact your dealer or the customer service centre. Engines, which are stored for longer than 30 days, should not have any fuel in the tank to prevent the formation of residue in the fuelsystem, in particular on important parts of the carburettor.

• Leave the engine running until the tank runs out of fuel and the engine stops.

• Change oil. See “Changing the oil”.

• Remove the spark plug and pour approx. 15 ml of engine oil into the cylinder. Re-install the spark plug and briefly activate the starter to distribute the oil.

• Remove dirt around the engine, under the finger guard and under, around and behind the exhaust. Apply a light film of oil to areas which could rust.

• Store in a clean, dry and well ventilated area away from units which operate with a flame or a warning lamp, e.g. heating equipment, boilers or tumbledryers. Areas
  should also be avoided in which a sparkgenerating electric motor is situated or in which electric tools are used.

• If possible, storage areas with a high air humidity should not be selected either, as this promotes the formation of rust and corrosion.

• Store the unit on a flat surface. If the unit is on an incline, fuel or oil may run out.

Procedure following prolonged storage

• Check the engine as described in the section “Checking the engine before start-up”.
• If the fuel was drained prior to storage of the unit, fill up the tank with fresh petrol. If a petrol can is used for refuelling, ensure that it contains fresh petrol.
• If the cylinder was oiled during storage, the engine generates a little smoke when it is started. This is normal.

Warranty

The warranty rules issued by our company or the importer apply to every country. Faults will be repaired free of charge within the framework of the guarantee, provided that they have been caused by a material defect or manufacturing error. Should you need to call upon the warranty, please apply to the vendor of your machine or to the nearest agency.

Troubleshooting

lead-free fuel.
Stale fuel.| Drain stale fuel into a suitable container outdoors. Fill tank with clean, fresh and
lead-free fuel.
Engine in cold state, choke not actuated.| Pull out choke.
Spark-plug lead not connected.| Push spark-plug lead onto the spark plug.
Spark plug dirty or defective.| Clean spark plug.
Re-adjust gap between electrodes or change spark plug.
Throttle is not in position | Set throttle to position .
Blocked petrol line.| Clean petrol line ).
Fuse defective.| Have fuse replaced ).
Starter defective.| Have starter checked ).
Engine runs unevenly
(stutters).| Choke lever set to “CHOKE/ ”.| Set choke lever to “ /OFF”.
Spark-plug lead loosely connected.| Firmly connect spark-plug lead.
Stale fuel.| Drain stale fuel into a suitable container outdoors. Fill tank with clean, fresh and lead-free fuel.
Spark plug scorched, defective or gap between electrodes too wide.| Re-adjust gap between electrodes orchange spark plug.
Petrol filter blocked.| Have petrol filter changed ).
Air filter clogged.| Clean or replace air filter.
Engine overheats.| Inadequate engine oil.| Fill crank case with appropriate amount of oil.
Engine cooling fins dirty.| Clean cooling fins.

*) This work may only be carried out by a specialist company.
Note
**** If repairs exceed the work mentioned above, please contact your local dealer with customer service facilities.

Stanley Black & Decker Outdoor GmbH
Wiesenstraße 9
66129 Saarbrücken
Fon/Phone +49 6805 79-0
Fax +49 6805 79-442

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