Zenoah GZ7000 manual Needle bearing lubrication, Adjustment of the oil pump, Cooling system

Page 34

MAINTENANCE

Needle bearing lubrication

The clutch drum has a needle bearing on the output shaft. This needle bearing must be lubricated regularly (once a week).

When lubricating, remove the clutch cover by loosening the two bar nuts. Lay the saw on its side with the clutch drum upwards.

Lubrication involves engine oil dripping into the centre of the clutch drum as it rotates.

Adjustment of the oil pump

The oil pump is adjustable. Adjustments are made by turning the screw using a screwdriver or combination spanner. The machine is supplied from the factory set to 1 turn open. Turning the screw clockwise will reduce the oil flow and turning the screw anti-clockwise will increase the oil flow.

Recommended settings:

Bar 20"-24": 2 turns from the closed position.

Bar 28" - : 3 turns from the closed position.

 

!

WARNING! The engine must not be

 

running when making adjustments.

 

 

 

Cooling system

To keep the working temperature as low as possible the machine is equipped with a cooling system.

The cooling system consists of:

1Air intake on the starter.

2 Air guide plate.

3 Fins on the flywheel.

4 Cooling fins on the cylinder.

5 Cylinder cover (directs cold air over the cylinder).

5

4

3

2

1

Clean the cooling system with a brush once a week, more often in demanding conditions. A dirty or blocked cooling system results in the machine overheating which causes damage to the piston and cylinder.

Note! The cooling system on a chain saw with catalytic converter must be cleaned daily. This is particularly important on chain saws with catalytic converters, because the higher exhaust temperature requires efficient cooling of the engine and the catalytic converter unit.

”Dust Free” centrifugal cleaning

Centrifugal cleaning means the following: All air to the carburettor passes through the starter. Dirt and dust is centrifuged out by the cooling fan.

IMPORTANT! In order to maintain operation of the centrifugal cleaning system it must be regularly maintained. Clean the air intake to the starter, the fins on the flywheel, the space around the flywheel, inlet pipe and carburettor compartment.

34 – English

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Contents Operator’s manual Symbols on the machine KEY to SymbolsSymbols in the operator’s manual Contents What is WHAT? What is what on the chain saw?Before using a new chain saw General Safety PrecautionsAlways use common sense Personal protective equipment Machine′s safety equipmentChain brake and front hand guard General Safety Precautions Right hand guard Throttle lockoutChain catcher Vibration damping systemMuffler Stop switchCutting equipment General rulesChain Cutting equipment designed to reduce kickbackBar Injuries Some terms that describe the bar and chainSharpening your chain and adjusting depth gauge setting General information on sharpening cutting teethTensioning the chain Filling with chain oil Lubricating cutting equipmentWhich could lead to serious, even fatal injuries Chain oil Checking chain lubricationNeedle bearing lubrication Chain drive sprocketChecking wear on cutting equipment Fitting a spike bumper AssemblyFitting the bar and chain Protect your hands from injuryFuel Handling FuelTransport and storage Fuel safetyFuelling Long-term storageCold engine Starting and StoppingStarting and stopping Warm engineStopping Before use Basic safety rulesWorking Techniques General working instructionsGeneral rules Basic cutting technique TermsLimbing Felling direction Tree felling techniqueSafe distance Clearing the trunk and preparing your retreatDirectional cuts Felling cutFreeing a trapped tree General adviceFreeing a tree that has fallen badly Cutting trees and branches that are in tensionWhat is kickback? How to avoid kickbackCutting the trunk into logs Carburettor adjustment MaintenanceGeneral Checking brake band wear Correctly adjusted carburettorHigh speed jet H Checking the front hand guardChecking the inertia brake release ImmediatelyMuffler Tensioning the recoil spring StarterChanging a broken or worn starter cord Changing a broken recoil springLubricating the bar tip sprocket Air filterSpark plug Must always be replacedRunning when making adjustments Adjustment of the oil pumpDust Free centrifugal cleaning Needle bearing lubricationWinter use Temperature 0C or colderFitting the winterising kit Maintenance schedule Daily maintenance Weekly maintenance Monthly maintenanceTechnical Data Technical dataApplies to Europe only Bar and chain combinationsSaw chain filing and file gauges EC-declaration of conformity EN ISO 12100-22003, Cispr 122005, EN ISOLimited Warranty Limited warranty1151332-26
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