McCulloch MC3516 Cleaning the Spark ARREST- ING Screen, Replace Spark Plug, To Sharpen Chain

Page 16

CLEANING THE SPARK ARREST- ING SCREEN

Cleaning is required every 25 hours of op- eration or annually, whichever comes first.

1.Loosen and remove the nut from the ex- haust outlet cover.

2.Remove the exhaust oulet cover.

3.Remove spark arresting screen. Handle screen carefully to prevent damage.

4.Clean the spark arresting screen gently with a wire brush. Replace screen if breaks are found.

5.Replace any broken or cracked muffler parts.

6.Reinstall spark arresting screen, exhaust outlet cover, and nut. Tighten nut securely.

REPLACE SPARK PLUG

The spark plug should be replaced each year to ensure the engine starts easier and runs better. Ignition timing is fixed and non- adjustable.

NOTE: This spark ignition system complies with the Canadian standard ICES--002.

1.

Loosen 3 screws on cylinder cover.

2.

Remove the cylinder cover.

3.

Pull off the spark plug boot.

4.

Remove spark plug from cylinder and

 

discard.

5.

Replace with Champion RCJ--7Y spark

 

plug and tighten securely with a 3/ inch

 

4

 

(19 mm) socket wrench. Spark plug gap

 

should be 0.025 inch (0,6 mm).

6.

Reinstall the spark plug boot.

7.

Reinstall the cylinder cover and 3

 

screws. Tighten securely.

WARNING: Wear protective gloves when handling chain. The chain is sharp and can cut you even when it is not moving.

Conditions which indicate the need for chain sharpening:

SReduction in size of wood chips. The size of the wood chip will decrease as the chain gets duller until it becomes more like a powder than a chip. Note that dead or

rotted wood will not produce a good chip.

SSaw cuts to one side or at an angle. S Saw has to be forced through the cut.

Tools required:

S 5/32 inch (4 mm) diameter round file and file holder

S Flat file

S Depth gauge tool

TO SHARPEN CHAIN:

1.Move ON/STOP switch to the STOP position.

2.Check chain for proper tension. Adjust chain tension if necessary. See CHAIN TENSION section.

3.Sharpen cutters.

S To sharpen the cutters, position the file holder level (90˚) so that it rests on the top edges of the cutter and depth gauge.

NOTE: The chain has both left and right hand cutters.

File Holder

File

Cylinder

Cutter

90˚

Cover

Spark

Plug Boot

Spark

Plug

REPLACE FUEL FILTER

To replace fuel filter, drain your unit by run- ning it dry of fuel. Remove fuel cap and its connected retainer from tank. Pull filter from tank and remove from line. Replace and re- assemble.

CHAIN ADJUSTMENT

See CHAIN TENSION in ASSEMBLY section.

CHAIN SHARPENING

WARNING: Improper chain sharp- ening techniques and/or depth gauge mainte- nance will increase the chance of kickback which can result in serious injury.

Depth Gauge

SAlign the 30˚ file holder marks paral- lel with the bar and to the center of the chain.

Cutter

30˚

Cutter

File Holder Line

 

SSharpen cutters on one side of the chain first. File from the inside of each cutter to the outside. Then, turn the chain saw around and repeat the pro- cess for the other side of the chain.

SFile on the forward stroke only. Use 2 or 3 strokes per cutting edge.

SKeep all cutters the same length when filing.

SFile enough to remove any damage to cutting edges (side plate and top plate of cutter).

All Cutters

Remove Damage

Same Length

 

 

Top Plate

 

Side Plate

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Contents Manual de Instrucciones Manuel d’Instructions Plan Ahead Starting ReminderTions found in this manual Operate Your SAW Safely Maintain Your SAW in Good Working OrderHandle Fuel with Caution KickbackReduce the Chance of Kickback Maintain ControlAvoid Pinch-Kickback Avoid Pull-InChain Brake and CKA Angle Kickback Safety FeaturesChain saws as set by Ansi B175.1 Assembly Attaching the BAR & Chain If notChain Tension Adjusting the tensionChecking the tension Operation ON/STOP Switch Throttle TriggerKnow Your Chain SAW Throttle LOCK-OUT CHOKE/FAST Idle LeverPrimer Bulb Chain BrakeImportant Points to Remember Starting a Warm EngineDifficult Starting or starting a flooded engine Right Foot Through Rear HandleBraking function control Caution The chain brake must be Inertia activating function controlOperating Tips Tree Felling TechniquesFelling Large Trees Notch CUT and Felling the TreeCutting a Fallen Tree Important PointsBucking Using a LOG or Support Stand Bucking Without a SupportLimbing and Pruning Important Points LimbingService Inspect and Clean Unit and Decals Clean AIR FilterCheck Guide BAR Check Fuel Mixture LevelCleaning the Spark ARREST- ING Screen Chain AdjustmentReplace Spark Plug To Sharpen ChainCarburetor Adjustment StorageIdle Speed-T Cooling SystemLoad Adjustment Engine Fuel SystemEngine OtherMcCulloch Ligations The U.S. Environmental

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