Recent content by Stefanseiner

I played a little with the G7550 over the last weeks. muffler mod, custom ultra-thin base gasket, carb modified, cylinder ported. No it's a beast but stock it seems that the 75cc can't run propperly because of several limitations which come from the irogon 62cc design.

I see youre from Germany too. You can buy the parts for using an 372XP carb on the chinese G5000 chainsaw here on eBay

at the meantime a had a lot of port jobs on G5000 series chainsaws, 50cc, 58cc and 62cc Actually I do a little work on a 62cc model with 372XP carb I can't get to run propperly. The carb is not adjustable well, at this point I haven't figuered out the problem. Maybe an air leak somewhere, maybe...

some (EU?) models do have an catalysator inside which causes a lot of counter pressure AND heat, and all models have a diffusor inside looks like that. Some have a few big holes like ths one some have a few smaller holes

you have ported the dual ports as well? There is a guy on Youtube at UK which is porting these chinese saws very high and he swears on the dual ports but I am not sure he ever tested out the quad ports. But I think what he saying is right: the transfers of the quad are significant smaller then...

I've done this befor several times without problems. Some scratches but nothing broken. But at this saw the crank case is made of very thin material and now there is a very little crack inside the case where I put the screw driver outside... But I learned my lesson, some special tools you really...

cheap chinese chainsaw which is my test object to learn how to modify and port engines for more power

disassembled two chainsaws in order to swap the big crank shaft of an defective chainsaw to a new chainsaw which came with a smaller crank shaft

muffler for a Komatsu Zenoah clone saw - cut in into two parts to empty it inside - two 16mm outlet ports but I need more exercises on welding thin metal, normally I do 10mm or so on my tractor

meanwhile I did some modifications on a cheap chinese 52cc saw I bought on eBay before christmas works done so far: 1. changed the orig. dual port cylinder to the better quad port version (higher agility, higher rpm at stock possible, higher torque) 2. Muffler mod (drilled the internal...

a flywheel removal tool because yesterday I damaged a crank case by using a screw driver for removing :confused:

thanks very much, this will help :-) I thought I bookmarked a written tutorial from "thechainsawguy" or so but I can't find it anymore

the video is down, does anyone has a copy of it or an alternative video link? I am searching for a step-by-step tutorial (not necessarily a video tut) to assemble my Farmertec G660 kit. thanks very much and regards Stefan

the photovoltaics is done and now I had some time to cut a little tree for testing first I've done three cuts @ stock and took the time 1. power optimisation: back at the work bench for change / build in a new cylinder head with quadport instead of the original dualport left...

sorry but no. I squeezed in a new construction site before winter is there and working on the roof is not possible anymore, a 12 KVA photovoltaic system. After that I will continue the chainsaw project