Husqvarna 1150902-95 Spark plug, Lubricating the bar tip sprocket, Needle bearing lubrication

Page 37

MAINTENANCE

Spark plug

The spark plug condition is influenced by:

•Incorrect carburetor adjustment.

•An incorrect fuel mixture (too much or incorrect type of oil).

•A dirty air filter.

These factors cause deposits on the spark plug electrodes, which may result in operating problems and starting difficulties.

If the machine is low on power, difficult to start or runs poorly at idle speed: always check the spark plug first before taking any further action. If the spark plug is dirty, clean it and check that the electrode gap is 0.020 inch (0.5 mm). The spark plug should be replaced after about a month in operation or earlier if necessary.

Note! Always use the recommended spark plug type! Use of the wrong spark plug can damage the piston/cylinder. Check that the spark plug is fitted with a suppressor.

Lubricating the bar tip sprocket

Lubricate the bar tip sprocket each time you refuel. Use the special grease gun and a good quality bearing grease.

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

Adjustments are made by turning the screw using a screwdriver or combination spanner. The machine is supplied from the factory with the screw set to position 2. Turning the screw clockwise will reduce the oil flow and turning the screw anti-clockwise will increase the oil flow.

Recommended settings:

Bar 13"-15": Position 1

Bar 15"-18": Position 2

Bar 18"-20": Position 3

These recommendations apply to Husqvarna’s chain oil, for other chain oils increase the oil flow by one step.

 

!

WARNING! The engine must be stopped

 

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.

2Air guide plate.

3Fins on the flywheel.

4Cooling fins on the cylinder.

English – 37

Page 36 Page 38
Image 37
Page 36 Page 38
Contents 455e Rancher Rancher 460 Rancher Symbols on the machine KEY to SymbolsSymbols in the operator’s manual EPA Contents Dear customer IntroductionWhat is what on the chain saw? What is WHAT?Before using a new chain saw General Safety PrecautionsAlways use common sense Machine′s safety equipmentPersonal protective equipment Chain brake and front hand guardGeneral Safety Precautions Chain catcher Throttle lockoutRight hand guard Cutting equipment Stop switchVibration damping system MufflerBar Cutting equipment designed to reduce kickbackChain General information on sharpening cutting teeth Sharpening your chain and adjusting depth gauge settingTensioning the chain 455e Rancher Lubricating cutting equipmentFilling with chain oil Checking chain lubricationNeedle bearing lubrication Chain drive sprocketChecking wear on cutting equipment Bar Fitting the bar and chain AssemblyRancher, 460 Rancher 455e RancherAssembly Fuel Fuel HandlingFueling Fuel safetyTransport and storage Long-term storageStarting and stopping Starting and StoppingCold engine Warm engineStopping Working Techniques Basic safety rulesBefore use General working instructionsGeneral rules Terms Basic cutting techniqueLimbing Safe distance Tree felling techniqueFelling direction Clearing the trunk and preparing your retreatFelling cut Directional cutsFreeing a tree that has fallen badly General adviceFreeing a trapped tree Cutting trees and branches that are in tensionWhat is kickback? How to avoid kickbackCutting the trunk into logs Carburetor adjustment MaintenanceGeneral Checking brake band wear Correctly adjusted carburetorChecking the front hand guard Checking the inertia brake releaseThrottle lockout Starter MufflerChanging a broken or worn starter cord Tensioning the recoil spring Air filterChanging a broken recoil spring Fitting the starterSpark plug Adjustment of the oil pumpLubricating the bar tip sprocket Needle bearing lubricationTemperature 0C 32F or colder Air Injection centrifugal cleaningTemperature -5C 23F or colder Winter useDaily maintenance Weekly maintenance Monthly maintenance Maintenance scheduleTechnical data Technical DataSaw chain filing and file gauges Bar and chain combinationsRepair or Replacement of Parts Repair or Federal Emission Control Warranty StatementConsequential Damages Husqvarna Forest Safety precautions for chain saw users American Standard Safety PrecautionsKickback safety precautions Other safety precautions1150902-95
Top Page Image Contents