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Stump Grinder
E&OE
© 2017 Baumr-AG
15
Problem
Possible solutions
Belt coming off.
1. Pulleys not aligned.
2. Belt tension is insufficient. Adjust belt tension.
Belt engages late Or slips. 1. Tighten the belt as described in the operator’s manual.
2. Reduce cutting depth.
Belt not staying tight after
adjustment.
1. Check for damage on the axle, pulley or key. Make sure that the setscrews are
properly tightened.
2. Replace damaged parts.
The cutting wheel does
not rotate
1. Engine speed is insufficient to activate the centrifugal clutch.
2. Belt tension is insufficient. Adjust belt tension.
3. Clutch is worn-replace shoes and springs, and/or clutch bearings.
The cutting wheel
continues to rotate.
1. Check that the throttle is disconnected.
2. Check for damage on the throttle cable.
3. Check that the throttle cable is properly mounted on the throttle valve.
4. The engine speed is not under 1000 rpm, which is required to Disengage the
centrifugal clutch.
5. Inspect springs on clutch shoes. If tension on clutch shoes is not enough to pull shoes
back, replace spring and clutch shoes.
The parking brake is
slipping
1. Adjust the brake tension in the manner described in the operator’s manual.
2. Check for damage on the brake rod or lever.
3. Check for wear on the brake pads. Replace as necessary.
Storage
Winter Storage
At the end of the season, the machine should be readied for storage (or if it will not be in use for longer than
30 days). Fuel allowed to stand for long periods of time (30 days or more) can leave sticky residues that can
plug the carburetor and disrupt engine function.
Fuel stabilizers are an acceptable option as regards sticky residues during storage. If alkylate gasoline
(Aspen) is used, stabilizers are unnecessary because this fuel is stable. However, you should avoid switching
between regular and alkylate gasoline as sensitive rubber components can harden. Add stabilizer to the fuel
in the tank or in the storage container. Always use the mixing ratios specified by the manufacturer of the
stabilizer. Run the engine for at least 10 minutes after add in the stabilizer so that it reaches the carburetor.
Do NOT empty the fuel tank and the carburetor if you have added stabilizer.
WARNING
NEVER store an engine with fuel in the tank indoors or in poorly ventilated spaces where fuel
vapor can come in contact with open flame, sparks or a pilot light such as in a boiler, hot water
tank, clothing drier, etc. handle the fuel with caution. It is very flammable and careless use can
cause serious damage to person and property. Drain the fuel into an approved container
outdoors and far away from open flame. NEVER use gasoline for cleaning. Use a de-greaser and
warm water instead.
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