Husqvarna 1153137-95 Spark plug, Lubricating the bar tip sprocket, Needle bearing lubrication

Page 36

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 16"-18": Position 2

Bar 20"-24": 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.

36 – English

1153137-95 Rev.2 2009-12-29

Page 35 Page 37
Image 36
Page 35 Page 37
Contents
455e Rancher Rancher 460 Rancher KEY to Symbols Symbols on the machineSymbols in the operator’s manual EPA Contents Introduction Dear customerWhat is WHAT? What is what on the chain saw?General Safety Precautions Before using a new chain sawAlways use common sense Machine′s safety equipment Personal protective equipmentChain brake and front hand guard General Safety Precautions Throttle lockout Chain catcherRight hand guard Vibration damping systemStop switch Cutting equipmentMuffler General rulesSharpening your chain and adjusting depth gauge setting Cutting equipment designed to reduce kickbackBar ChainGeneral advice on adjusting depth gauge setting Increased if the depth gauge setting isAdjustment of depth gauge setting Too largeTensioning the chain Bar and cause serious or even fatal injuryRancher, 460 Rancher 455e RancherLubricating cutting equipment Filling with chain oilChecking chain lubrication Chain drive sprocket Needle bearing lubricationChecking wear on cutting equipment Assembly Fitting the bar and chainRancher, 460 Rancher 455e RancherAssembly Fuel Handling FuelFuel safety FuelingTransport and storage Long-term storageStarting and Stopping Starting and stoppingCold engine Warm engineStopping Basic safety rules Working TechniquesBefore use General working instructionsGeneral rules Basic cutting technique TermsTree felling technique LimbingLog is supported at one end. There is a high risk Safe distanceFelling direction Clearing the trunk and preparing your retreatDirectional cuts Freeing a tree that has fallen badly Felling cutFreeing a trapped tree How to avoid kickback What is kickback?General advice Cutting trees and branches that are in tensionCutting the trunk into logs Maintenance Carburetor adjustmentGeneral Correctly adjusted carburetor When the bar hits the stump the brake should be appliedChecking brake band wear Checking the front hand guardChecking the brake trigger Muffler StarterChanging a broken or worn starter cord Air filter Tensioning the recoil springChanging a broken recoil spring Fitting the starterAdjustment of the oil pump Spark plugLubricating the bar tip sprocket Needle bearing lubricationAir Injection centrifugal cleaning Temperature 0C 32F or colderTemperature -5C 23F or colder Winter useMaintenance schedule Daily maintenance Weekly maintenance Monthly maintenanceTechnical Data Technical dataSaw chain filing and file gauges Gauge, Saw chain designationFederal Emission Control Warranty Statement Your Warranty Rights and ObligationsMAINTENANCE, Replacement Repair of EMISSION-RELATED Parts American Standard Safety Precautions Safety precautions for chain saw usersKickback safety precautions Other safety precautions1153137-95