Zenoah G3300EZ owner manual Maintenance of Saw Chain and Guide Bar

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G3300 / G3300EZ

8. Maintenance of Saw Chain and Guide Bar

Saw Chain

It is very important for smooth and safe op- eration to always keep the cutters sharp.

The cutters need to be sharpened when:

Sawdust becomes powder-like.

You need extra force to saw in.

The cut path does not go straight.

Vibration increases.

Fuel consumption increases.

Cutter setting standards:

Be sure to wear safety gloves.

Before filing:

Make sure the saw chain is held securely.

Make sure the engine is stopped.

Use a round file of proper size for the chain. Chain type: 91VG

File size:

5/32 in (4.0 mm)

Place the file on the cutter and push straight forward. Keep the file position as illustrated.

Be sure to round off the front edge to reduce the chance of kickback or tie-strap breakage.

Make sure every cutter has the same length and edge angles as illustrated.

Cutter length

Filing angle

Side plate angle

Top plate cutting angle

Guide Bar

Reverse the bar occasionally to prevent partial wear.

The bar rail should always be square. Check for wear of the bar rail. Apply a ruler to the bar and the out-

side of a cutter. If a gap is observed between them, the rail is normal. Otherwise, the bar rail is worn. Such a bar needs to be corrected or replaced.

Ruler

Gap

After each cutter has been filed, check the depth gauge and file it to the proper level as illustrated.

Appropriate gauge checker

Make the shoulder round

91VG .025(0.64 mm)

Depth gauge standard

No gap

Chain tilts

WARNING:

This saw is equipped with one of the following low kickback bar/chain combinations:

Komatsu Zenoah Part Number Saw Model Bar Size Guide Bar Saw Chain G3300/G3300EZ 14 848CB24G23 2931-52210

GB-14

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Contents G3300 / G3300EZ GB-1GB-2 LpA LwA98.9 dBA 112 dBA Contents For safe operation Kickback Safety Precau Tions for Chain SAW Users GB-5Position Oil cap Explanation of Symbols on the MachineInstalling Guide Bar and Saw Chain G3300G3300EZ Replace the guide plate when its file is worn GB-7Tighten the tensioner screw Tightening torque ~ 12.8 N·m 80~130kgf-cmFuel and Chain Oil Starting the Engine Adjusting the CarburetorOperating the Engine Checking the OIL SupplyChain Brake How to confirmSee Maintenance part for how to remove the cylinder cover Turn off the engineFelling a Tree SawingGuard Against Kickback Bucking and LimbingMaintenance Maintenance After Each USESpark plug Periodical Service Points Every 25 hours use Air cleanerFuel filter Cylinder finsReverse the bar occasionally to prevent partial wear Maintenance of Saw Chain and Guide BarSaw Chain Case 1. Starting failure Case 3. Oil does not come out Troubleshooting GuideCase 2. Lack of power/Poor acceleration/ Rough idling Power unit SpecificationsLimited warranty Cutting head