Maruyama MCV31R Manuel Du Propriétaire Et De L'utilisateur page 41

ENGINE COOLING
Maintenance Interval
• The engine cooling should be cleaned after every 25
hours of operation, or once a week, whichever comes
first.
• Air must flow freely around and through the cylinder
cooling fins to prevent engine overheating. Leaves,
grass, dirt and debris buildup on the fins will increase the
operating temperature of the engine, which can reduce
engine performance and shorten engine life.
Cooling Fin Cleaning
Clean all dirt and debris from around the cooling air intake.
MUFFLER (SILENCER)
Maintenance Interval
The muffler should be inspected and cleaned after each 100 hours of use.
• Be careful not to allow any dirt or debris to fall into the exhaust port, as this can cause engine
damage.
Muffler Maintenance
1. With the engine at ambient (room) temperature, loosen
the nut and remove the chain case.
2. Remove the two screws, and remove the Muffler.
3. Clean the muffler with a stiff brush.
4. Reinstall the muffler, then reinstall and tighten the two
screws.
5. Reinstall the Chain case.
CAUTION
k
Muffler cover
— US-40 —
Cooling air intake
Muffler body
Gasket
Plate
Screws