Power Products Thread....any and all info welcome.

[peter92]

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

 

[ray benson]

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

Out 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.

 

[peter92]

Out 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.

Thanks Ray, that could explain why the saw is popping when i try and set the H screw in

 

[peter92]

Thanks Ray, that could explain why the saw is popping when i try and set the H screw in

would it matter much if the timing was set to TDC instead of 4mm BTDC

 

[67L36Driver]

Yes. 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.
Note the 'D' handle. Pup will put the hurt on a fellow.

 

[peter92]

Yes. 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.

What would be the best way to find 25 degree as i dont have any thing to messure that

 

[MnSam]

I came across a decent Tecumseh AH81. I decided to mess with it today and quickly discovered no spark. The points look good but that is all that's there. I don't know where the coil/condenser go and what they even look like. What are my chances of finding some parts for this?

 

[67L36Driver]

Bump to the top.

Thanks Photobucket for effin up our thread.

 

[brandonstc6]

Guys, this may be a little off topic, but I picked up a motor from a Hoffco Whizz Witch weed eater. The shaft was bent and in bad shape, so I just got the motor. The motor seems to have compression, I’m not sure about spark yet. It is 85cc. What model of power products engine would it have? Also could it be used for anything a replacement for a chainsaw or maybe a kart motor?
Thanks in advance.


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[67L36Driver]

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.

 

[brandonstc6]

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.

Thanks, I didn’t think of checking those models. Acresinternet shows a AH 520 to be 84.5cc, so that must be it. I have only one saw with a pp engine and it has good compression and spark. Would this engine have any value?


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[Shawn N.]

Is this an AH81 or AH47? Thank you.

 

[pioneerguy600]

Is this an AH81 or AH47? Thank you.

Model number?

 

[Shawn N.]

Model 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

 

[pioneerguy600]

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

Not that I am aware of, those tags identified what engine size . You need to take the muffler off and use the straw through the exhaust port, mark with the piston and withdraw and measure the bore diameter.

 

[heimannm]

It is not a 47, the shape of the flywheel cover is wrong.





I don't think it is an 81 either, again the shape of the cover is different.





Maybe a 58 (5.1 In2)?

Mark

 

[pioneerguy600]

Is this an AH81 or AH47? Thank you.

This 5G 21 is an AH 81 version, the bore is 63.5 mm

 

[Shawn N.]

This 5G 21 is an AH 81 version, the bore is 63.5 mm

Thank you for all the great information. I am going to measure the bore when I get home this weekend to confirm what I have. Is this saw worth much since its missing a few parts or is it worth more in parts?

 

[pioneerguy600]

If it truly is a AH 81 version it would be worth around $150. to a collector but they are about worthless as a saw to run and cut wood. Difficult to say what a good one would fetch on eBay on a good day but I have never seen them bring much over the $150. mark.

 

[jerrycmorrow]

Got a ward branded mono SL 145 with a Lauson Power Products carb. Looking for a carb diagram cause the Stens rebuild kit gots pieces i wasnt expecting. Any help would be muchly appreciated. Heres the saw and carb