PDA

View Full Version : Echo PB755 stripped carb mounting bolt


jm3971
01-25-2012, 12:35 AM
I have an Echo PB 755 that I stripped the bolt hole threads on one side of the carb mount . Can anyone give me some ideas on the best way to go about repairing this problem .I would like to keep this blower as long as possible so any ideas would be appreciated.

dutch1
01-25-2012, 08:35 AM
The best solution is a Helicoil repair kit(other brands are available).

Here's a link to the process: http://www.youtube.com/watch?v=RFYa6sjhh_E

If you don't feel confident in doing the job yourself, a small engine shop should be able to do it for you. I've been away from a shop for close to 10 years now so am not familiar with what they might charge--the last I recall was $30-40.

The main problem in doing it yourself to begin with, is the initial cost of the kit. The last kit I purchased was around $28-30(per thread size) as I recall and if you don't have a proper drill size for the required kit you will have to purchase/borrow one. In the end, the shop cost versus DIY is going to be comparable.

Something you must consider is whether the hole is a through hole or a blind hole. If it's a blind hole, you will need a stop collar or a wrap of tape around the bit to insure that you don't go too deep thereby entering the cylinder.

Ir's just a stab in the dark, but I believe Echo uses 5x.8mm thread--you will want to check to make sure.

BigFish
01-25-2012, 09:07 AM
The carb mounts to a plastic insulator block. If the ins. block is stripped, then simply replace it. If the cyl. screw threads are stripped, then ya gotta heli-coil.

dutch1
01-25-2012, 09:54 AM
You're all over it, Fish. Good pick up--first things first.

I've replaced numerous isoblocks that had developed cracks but can't recall doing so for a thread failure. Fish, either I need one of those memory enhancement seminars or some of your meds.

piston slapper
01-25-2012, 06:35 PM
Dutch....your memory is holding up just fine.
As long as you don't forget that you were supposed to remember something, its all good.
Posted via Mobile Device

dutch1
01-25-2012, 08:04 PM
Slapper, I'm not at this point yet but I'm working on it. Watch

http ://www.tomrush.com./video_remember.html

jm3971
01-25-2012, 10:02 PM
I appreciate the info guys . I'll check to see if it's an insulator block , if not then I'll tackle the Helicoil project.

piston slapper
01-26-2012, 07:43 AM
Dutch.....even with a little recall problem every now and then,you still know more than 95% of the folks on this site.
A personal secretary with big #^%&##'s and an IQ above a potato could help.
Posted via Mobile Device