Zenoah GZ7000 manual Sharpening your chain and adjusting depth gauge setting

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GENERAL SAFETY PRECAUTIONS

Sharpening your chain and adjusting depth gauge setting

General information on sharpening cutting teeth

•Never use a blunt chain. When the chain is blunt you have to exert more pressure to force the bar through the wood and the chips will be very small. If the chain is very blunt it will produce wood powder and no chips or shavings.

•A sharp chain eats its way through the wood and produces long, thick chips or shavings.

•The cutting part of the chain is called the cutting link and this consists of a cutting tooth (A) and the raker lip

(B). The cutting depth (C) is determined by the difference in height between the two.

When you sharpen a cutting tooth there are four important factors to remember.

1Filing angle

2Cutting angle

3File position

4Round ﬁle diameter

It is very difﬁcult to sharpen a chain correctly without the right equipment. We recommend that you use our ﬁle gauge. This will help you obtain the maximum kickback reduction and cutting performance from your chain. See instructions under the heading Technical data for information about sharpening your chain.

WARNING! Departure from the

! sharpening instructions considerably

increases the risk of kickback.

Sharpening cutting teeth

To sharpen cutting teeth you will need a round ﬁle and a ﬁle gauge. See instructions under the heading Technical data for information on the size of ﬁle and gauge that are recommended for the chain ﬁtted to your chain saw.

•Check that the chain is correctly tensioned. A slack chain will move sideways, making it more difﬁcult to sharpen correctly.

•Always ﬁle cutting teeth from the inside face. Reduce the pressure on the return stroke. File all the teeth on one side ﬁrst, then turn the chain saw over and ﬁle the teeth on the other side.

•File all the teeth to the same length. When the length of the cutting teeth is reduced to 4 mm (5/32") the chain is worn out and should be replaced.

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Contents Operator’s manual Symbols in the operator’s manual KEY to SymbolsSymbols on the machine Contents What is what on the chain saw? What is WHAT?Always use common sense General Safety PrecautionsBefore using a new chain saw Chain brake and front hand guard Machine′s safety equipmentPersonal protective equipment General Safety Precautions Vibration damping system Throttle lockoutChain catcher Right hand guardGeneral rules Stop switchCutting equipment MufﬂerInjuries Some terms that describe the bar and chain Cutting equipment designed to reduce kickbackBar ChainGeneral information on sharpening cutting teeth Sharpening your chain and adjusting depth gauge settingTensioning the chain Checking chain lubrication Lubricating cutting equipmentWhich could lead to serious, even fatal injuries Chain oil Filling with chain oilChecking wear on cutting equipment Chain drive sprocketNeedle bearing lubrication Protect your hands from injury AssemblyFitting the bar and chain Fitting a spike bumperFuel Fuel HandlingLong-term storage Fuel safetyFuelling Transport and storageWarm engine Starting and StoppingStarting and stopping Cold engineStopping General working instructions Basic safety rulesWorking Techniques Before useGeneral rules Terms Basic cutting techniqueLimbing Clearing the trunk and preparing your retreat Tree felling techniqueSafe distance Felling directionFelling cut Directional cutsCutting trees and branches that are in tension General adviceFreeing a tree that has fallen badly Freeing a trapped treeCutting the trunk into logs How to avoid kickbackWhat is kickback? General MaintenanceCarburettor adjustment Checking the front hand guard Correctly adjusted carburettorHigh speed jet H Checking brake band wearImmediately Checking the inertia brake releaseMufﬂer Changing a broken recoil spring StarterChanging a broken or worn starter cord Tensioning the recoil springMust always be replaced Air ﬁlterSpark plug Lubricating the bar tip sprocketNeedle bearing lubrication Adjustment of the oil pumpDust Free centrifugal cleaning Running when making adjustmentsFitting the winterising kit Temperature 0C or colderWinter use Daily maintenance Weekly maintenance Monthly maintenance Maintenance scheduleTechnical data Technical DataEN ISO 12100-22003, Cispr 122005, EN ISO Bar and chain combinationsSaw chain ﬁling and ﬁle gauges EC-declaration of conformity Applies to Europe onlyLimited warranty Limited Warranty1151332-26