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Craftsman 5.5 Push weedtrimmer engine swap?

#1

J

Joel.B

A friend thinks I know how to fix stuff- so he dropped off a very neglected Craftsman rolling weed trimmer that has Craftsman 5.5 engine. The thing was filthy as can be, had milk in the crankcase, carb full of junk, valve burnt and bent......

I see many craftsman lawn mowers on craigslist for cheap with same 5.5 or larger engines....is there any reason I can't easily swap an engine from one of those mowers unto this trimmer? What do I need to look for for easiest swap?

Thanks for any help you can give

whats best thing to do with leftover parts?


#2

exotion

exotion

Joel.B said:
A friend thinks I know how to fix stuff- so he dropped off a very neglected Craftsman rolling weed trimmer that has Craftsman 5.5 engine. The thing was filthy as can be, had milk in the crankcase, carb full of junk, valve burnt and bent......

I see many craftsman lawn mowers on craigslist for cheap with same 5.5 or larger engines....is there any reason I can't easily swap an engine from one of those mowers unto this trimmer? What do I need to look for for easiest swap?

Thanks for any help you can give

whats best thing to do with leftover parts?
Click to expand...

See if you can get pulley off crap engine. And if you can find a similar engine the pulley assembly needs to fit the new crank shaft after that its a pretty simple swap


#3

J

Joel.B

Thanks exotion

is there any database or such that shows which engines have same/similar bolt patterns? I am wondering if I have to stick with exact same engine or can I look for several options'?


#4

exotion

exotion

Unfortunately this knowledge I do not have. I believe most b&s engines are similar bolt pattern like I said your pulley is going to be the hard part for simplicity reasons id say stick with the same engine


#5

J

Joel.B

I dont suppose if anybody in here would know if the Pulley from trimmer fits on the shaft of the push mower of same make/size?

I can take pulley off and give it to the guy before he goes off hunting for the proper push-mower, but I have my doubts as to whether he will understand exactly what it is he needs to look for to insure the swap will work, and I can't do the leg-work for him.


#6

Carscw

Carscw

Joel.B said:
I dont suppose if anybody in here would know if the Pulley from trimmer fits on the shaft of the push mower of same make/size?

I can take pulley off and give it to the guy before he goes off hunting for the proper push-mower, but I have my doubts as to whether he will understand exactly what it is he needs to look for to insure the swap will work, and I can't do the leg-work for him.
Click to expand...


It is the same engine But you want one off of a none propelled mower So you want the short shaft. But I do think the long shaft will also work

(( cowboy up and get over it ))


#7

Fish

Fish

The crankshaft will be the main problem.

The second problem will be the flywheel.


#8

J

Joel.B

Fish said:
The crankshaft will be the main problem.

The second problem will be the flywheel.
Click to expand...

WOuld you mind expounding on that a bit for me? You say "will" be a problem- as in it wont work? Or??????

Would you know what work would need to be done to make it work? Is there a new "crate" engine that could be bought and installed for less than price of new trimmer?

Thanks very much again for any help on this.


#9

Fish

Fish

The pushmower engines come with an aluminum flywheel, the blade bolted on makes up the weight difference.

You just need to find a matching cast iron flywheel....


#10

J

Joel.B

Fish said:
The pushmower engines come with an aluminum flywheel, the blade bolted on makes up the weight difference.

You just need to find a matching cast iron flywheel....
Click to expand...

aaah thanks Fish.. Can I simply swap iron flywheel from junk engine unto the fresher mower engine?


#11

Fish

Fish

Yeah, if they are the same engine. You will need to get familiar with model/type/code numbers and online parts lookups..


#12

D

don1qaz

I have same problem. Craftsman 5 HP walkbehind trimmer. I tried to Sub with another motor. The trouble with this is the flywheel weight. If you want to find out JUST take off the blade on a good mower and you will find it will KICK back very hard. and may not start at all. I going to try to use the heavy cast iron flywheel and put it on a regular motor.
Joel.B said:
A friend thinks I know how to fix stuff- so he dropped off a very neglected Craftsman rolling weed trimmer that has Craftsman 5.5 engine. The thing was filthy as can be, had milk in the crankcase, carb full of junk, valve burnt and bent......

I see many craftsman lawn mowers on craigslist for cheap with same 5.5 or larger engines....is there any reason I can't easily swap an engine from one of those mowers unto this trimmer? What do I need to look for for easiest swap?

Thanks for any help you can give

whats best thing to do with leftover parts?
Click to expand...


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