Stihl 028 noob questions.

[Adamam]

Hello! Again! More noobish questions that I'm hoping one of you kind, kind people can help me with!

 

Fresh from my Dolmar fix-up success, I bought a cheap Stihl 028 doer-uper.

 

Seems in good-to-great mechanical condition. Result.

 

Questions:

 

1. The rear handle (part of the case, presumably) is suffering from corrosion. What can I do to halt this? What is the case/handle made from? What has caused the corrosion?

 

2. The model is 028 av. Is there an easy way to work out if it's 43cc or 47cc?

 

Massive appreciation to anybody who can offer help.

 

Adam

[spudulike]

Hello! Again! More noobish questions that I'm hoping one of you kind, kind people can help me with!

 

Fresh from my Dolmar fix-up success, I bought a cheap Stihl 028 doer-uper.

 

Seems in good-to-great mechanical condition. Result.

 

Questions:

 

1. The rear handle (part of the case, presumably) is suffering from corrosion. What can I do to halt this? What is the case/handle made from? What has caused the corrosion?

 

2. The model is 028 av. Is there an easy way to work out if it's 43cc or 47cc?

 

Massive appreciation to anybody who can offer help.

 

Adam

 

As far as the corrosion goes, it will be oxidising so you need to stop air getting to the metal through paint or epoxy etc after a thorough clean

 

The smaller cc saw had a 44mm bore, the larger, a 46mm bore. If the saw is stripped down then just use a vernier or rule on the piston.

 

If it is a complete saw, remove the muffler, insert one of those little pipes you get on cans of WD 40 in to the exhaust port and push it lightly against the other side of the bore. move the piston up so it shears off the pipe, drop the piston, remove the piece of pipe and measure it:thumbup:

[Adamam]

As far as the corrosion goes, it will be oxidising so you need to stop air getting to the metal through paint or epoxy etc after a thorough clean

 

The smaller cc saw had a 44mm bore, the larger, a 46mm bore. If the saw is stripped down then just use a vernier or rule on the piston.

 

If it is a complete saw, remove the muffler, insert one of those little pipes you get on cans of WD 40 in to the exhaust port and push it lightly against the other side of the bore. move the piston up so it shears off the pipe, drop the piston, remove the piece of pipe and measure it:thumbup:

 

You are literally the best forum member of any forum ever!

 

[spudulike]

You are literally the best forum member of any forum ever!

 

 

Thanks for the good rep though I am sure there are many other members who have similar depths of knowledge on other subjects:thumbup:

[bobh]

 

If it is a complete saw, remove the muffler, insert one of those little pipes you get on cans of WD 40 in to the exhaust port and push it lightly against the other side of the bore. move the piston up so it shears off the pipe, drop the piston, remove the piece of pipe and measure it:thumbup:

 

 

That's genius mate, great idea

[Megatron]

There were three different displacements (one being designated Super);

42mm --> 43cc

44mm --> 47cc

46mm --> 51.5cc (028Super)

 

It sounds like you have an early version with the alloy handle, which most likely means it is the 42mm one.

 

The WD40 straw may work but I wouldn't recommend it...

A similar method using a cocktail/kebab stick and using the piston to indent the edge of the exhaust port roof upon the stick is a better method, imo.

[pleasant]

I've been using for years the long flat wooden coffee stirrers you get from costa coffee, starbucks etc. They are already rounded off on the ends for a more accurate fit in the curvature of the bore, are strong and not flexible, so ideal to be indented when you raise the piston and best of all are free by the handful.

 

Try them.

[GardenKit]

The WD40 straw may work but I wouldn't recommend it...

.

 

Any particular reason? I initially thought it sounded a good idea. Wished I'd thought of it.

[Stubby]

Do costa supply a telescopic bore gauge and mic ? at all ?

[pleasant]

....hmmm no, but you can get served by some young, disinterested minx with an attitude.