Oregon Qualcast PC40 Operation And Maintenance Manual page 20

Maintenance
Maintenance instructions
WARNING: Never have more than 3 links removed from a loop of chain. This could cause damage
to the sprocket.
CHAIN LUBRICATION:
Always make sure the automatic oiler system is working properly. Keep the oil tank lled with Chain,
Bar and Sprocket Oil.
Adequate lubrication of the bar and chain during cutting operations is essential to minimize friction
with the guide bar.
Never starve the bar and chain of lubricating oil. Running the saw dry or with too little oil will decrease
cutting ef ciency, shorten saw chain life, cause rapid dulling of chain, and lead to excessive wear of
bar from overheating. Too little oil is evidenced by smoke or bar discoloration.
TROUBLESHOOTING TABLE
WARNING: Always stop unit and disconnect spark plug before performing all of the recommended
remedies below except remedies that require operation of the unit.
PROBLEM
Unit won't start or starts
but will not run.
Unit starts, but engine
has low power.
Engine hesitates .
No power under load.
Runs erratically.
Smokes excessively.
20
PROBABLE CAUSE
Incorrect starting procedures.
Incorrect carburettor mixture
adjustment setting.
Fouled spark plug
Fuel lter carburettor.
Dirty spark arrester screen.
Dirty air lter.
Incorrect carburettor mixture
adjustment setting.
Incorrect carburettor mixture
adjustment setting.
Incorrectly gapped spark plug.
Incorrect carburettor mixture
adjustment setting.
Incorrect fuel mixture.
Customer Helpline 0844 801 3652
CORRECTIVE ACTION
Follow instructions in the User
Manual.
Have carburettor adjusted by an
Authorized Service Center.
Clean / gap or replace plug.
Replace fuel lter.
Replace spark arrester screen.
Remove, clean and reinstall lter.
Have carburettor adjusted by an
Authorized Service Center.
Have carburettor adjusted by an
Authorized Service Center.
Clean / gap or replace plug.
Have carburettor adjusted by an
Authorized Service Center.
Use properly mixed fuel (40:1
mixture).