peter92
Addicted to ArboristSite
Phil, any idea of the plug gap on the AH81 saw
Ive got mine set at 20 thou but its popping alot when i adjust the H screw
Peter
Ive got mine set at 20 thou but its popping alot when i adjust the H screw
Peter
Out of that Tecumseh service manual.Phil, any idea of the plug gap on the AH81 saw
Ive got mine set at 20 thou but its popping alot when i adjust the H screw
Peter
Thanks Ray, that could explain why the saw is popping when i try and set the H screw inOut of that Tecumseh service manual.
SPARK PLUG. Recommended
Champion spark plug numbers are
shown in the following chart:
AH36(type70) CJ8
AH47, AH58,
AH81 (chain saw) J8J
Go-Kart engines, short racesAH51,AH82
J4J
AH61 (bushing engine) J6J
AH61 (std. & super) L4J
AH58 with % inch
(9.53 mm) reach J4J
AH58 (type 1370 & 1371) L7
AH58 with V2 inch
(12.70 mm) reach L4J
Go-Kart engines, long racesAH51,AH82
J2J
AH61 (bushing engine) J4J
AH61 (std. & super) .L57R
AH58 with % inch
(9.53 mm) reach J2J
AH58 (type 1370 & 1371) L4J
AH58 with V2 inch
(12.7mm)reach .L57R
All other models .JllJ
Set electrode gap on L57R spark plugs
at 0.020 inch (0.51 mm). Electrode gap
should be 0.030 inch (0.76 mm) for all
other spark plugs.
would it matter much if the timing was set to TDC instead of 4mm BTDCThanks Ray, that could explain why the saw is popping when i try and set the H screw in
What would be the best way to find 25 degree as i dont have any thing to messure thatYes. Late spark will lead to missing.
Twenty five degrees BTDC is where most saws run best. But, without a compression release would be problematic to start.
That is, you could wind up with finger and hand damage.View attachment 455468
Note the 'D' handle. Pup will put the hurt on a fellow.
PP AH 480 it is I think.
Most likely drop in a lot of the old time saws. Watch rotation.
But they can be reversed.
Is this an AH81 or AH47? Thank you.
I can’t find a model number on it. The tag that I have seen on other saws on the lower right side is gone. Is there any other place I can look? ThanksModel number?
I can’t find a model number on it. The tag that I have seen on other saws on the lower right side is gone. Is there any other place I can look? Thanks
Is this an AH81 or AH47? Thank you.
This 5G 21 is an AH 81 version, the bore is 63.5 mm
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