Sharpening the Chain, P231 Specifications

MAINTENANCE

Sharpening the Chain

When the cutting edges of the blade become dull, they can be re- sharpened with a few strokes of a file.

In order to keep the blade in balance, all cutting edges must be sharpened equally.

In addition, inspect the chain for correct adjustment (more frequently with a new chain). The chain should feel snug but still pull freely. See Figure 36. Refer to page 16 for adjustment procedures.

Sharpening Instructions (Fig.37)

IMPORTANT!

File all cutters to the same angle and depth! Unequal filing may cause the saw to vibrate or cut erratically!

1.Using a 4.5 mm round file, sharpen all cutters to a 30° angle. Make sure that one fifth (20%) of the file’s diameter is always held above the cutter’s top plate.

NOTE:

For consistent filing angles, use a filing guide such as Oregon® p/n 31692 or equivalent.

2.After all cutters are sharpened, use a depth gauge joiner (Oregon® p/n 106738 or equivalent) to measure the height of each depth gauge.

3.As required, lower the depth gauges to a height of 0.020 inch. Use a flat file; (Oregon® p/n 12211 or equivalent).

4.After all depth gauges have been adjusted, use a flat file to round each depth gauge leading edge to its original curvature and angle.

Figure 36

Using a filing

gauge

Using a depth

gauge joiner

Using a flat file to round the front corner on a depth gauge

Figure 37

P231 Specifications

Dry Weight	6.1 kg/13.4 lb.
Length w/10" bar
assembly	2804 mm/110.4 in.
Engine Type	2-cycle, air-cooled,
vertical-cylinder
Bore x Stroke ...	32 x 28 mm/1.3 x 1.1 in.

Displacement ......... 22.5 cc/1.4 cu. in.

Maximum Output .......... 0.8kW/1.1 hp

@ 7500 rpm (min-1)

Fuel/oil ratio ...... 50:1 with ISO-L-EGD

or JASO FC class 2-cycle Mixing Oil

Shindaiwa ONE is a registered JASO FC classified oil and also meets or exceeds ISO-L-EGD performance requirements.

Fuel Tank Capacity		.... 670 ml/22.7 oz.
Carburetor Type		Walbro WYL-122
Ignition	One-piece, electronic,
transistor-controlled
Spark Plug		Champion CJ8
Air Filter	Non-reversible flocked
filter element
Muffler Type		2-Stage Catalyst
Starting Method		Recoil
Cooling System	.....................	Forced air
Stopping Method		Slide switch

Transmission Type		..............	Automatic,
centrifugal clutch with bevel gear
Chain Guide Bar			3/8" pitch,
.043" gauge, 10-inch Micro Lite™
Chain Type	3/8" pitch Micro Lite™,
.043" gauge
Sprockets		3/8-inch, fixed spur
Gearcase Ratio	...........................		1.06 : 1
Chain Speed		23.5 m (77 ft.)/sec.
@ 10,000 rpm (min-1)
Chain Lubrication			Automatic
adjustable oiler
Chain Lubricant ... Shindaiwa Premium
Bar and Chain Oil
Standard Equipment			Bar/chain

scabbard, tool kit containing a spark plug wrench, 4 mm hex wrench and 8 mm x 10 mm spanner

Optional Equipment	.... Shoulder strap,
loop handle
Optional Bars	8-inch or 12-inch
EPA Emission
Compliance Period*	........... Category A

*The EPA emission compliance referred to on the emission compliance label located on the engine, indicates the number of operating hours for which the engine has been shown to meet Federal emission requirements. Category C = 50 hours (Moderate), B = 125 hours (Intermediate) and A = 300 hours (Extended).

Specifications are subject to change without notice.

DESCRIPTION