That’s a great saw. Where you go with it depends on what you find.
Here’s the deal. The 026 were all 44mm saws. Stainless steel crank driven oiler. Oil well, but if you let the saw run all the time, it will oil and oil. I used to care, the conversion to the other pump ain’t worth the expense. 50cc saws limb and cut small stuff, why would you let it idle all day on the ground?
So, they came out with a “PRO” model. Pro had decomp valve, adjustable clutch driven oiler and I believe began the compensating “intellicarb” with the bigger air filter and Carb horn off metering side into the AF.
Then came the MS260. They began life as 44mm saws with “49cc” displacement on the tank sticker. Then the later ones increased to 44.7mm and were designated as “50cc” on the tank sticker. They all had the compensating larger air filter, but the PRO had the adjustable pump and decomp.
Both the MS260 PRO and Non-Pro came with either Fixed or adjustable H carbs. Yeah, they really did. I can’t tell which carb you have. The late 026 and all 260 tanks came with 3 adjustment holes. The early ones only 2. The wide outer holes mean Zama carb, the use of 2nnect to each other means Walbro.
As for mods, the sky is the limit. You’ll need an adjustable H carb. A muff mod and small timing advance works well. There is zero need for a decomp valve, as in zero.
Internal mods can go with nothing all the way to full race porting. How much you wanna spend?
Here’s a few 026/260 I’ve done. One is running a full 20” loop of 3/8 Stihl RS round file chain. A ported 026 (44mm) is running a 36” skip and another a 25” full comp chain. These are woods ports. The saw is a very good foundation for builds.
None of these saws are broken in, so I took it easy. They all gained another 1000 rpm after break in.
Contact
@huskihl, Steve Haling,
@crabby cooter for a Woods port. I’m out of the game.
Al
32” full comp in Maple
36” bar. Wouldn’t recommend it, but wanted to show recipient potential
20” RS 3/8 full comp
25” full comp
