Hi
I've read a couple of posts on here by Mark739 and Olneys.
Earlier today, I stripped down the Kehin BB carb and gave it a cleaning.
There was a great video on YouTube which I followed.
https://www.youtube.com/watch?v=V3S_7XpUioE
At 3:30, he takes a screw out and uses a rod to clean this jet/hole? out.
I used a bread tie and then a paperclip and I could NOT get it to insert into that hole much at all. 1mm. perhaps!
I used copious amounts of carb cleaner and even soaked in parafin for a while.
What does that hole do?
Also, in the video he shows pilot jet, screwed home and then backed out two complete turns. The manual stated 1+5/8 turns but when I removed it. I only counted 5/8 turns.
At first, the slow jet would not come out. It needed a good bash (carb in hand and hitting vertically down on tube which slow jet is in) to free it and allow it to come out. So this indicates it was well gummed up.
The slow jet was cleaned fairly well too.
All rebuilt but now the engine surges. I read a lot of articles on the net and tried various things.
When I sprayed carb cleaner onto packing gasket to cylinder head it smoothed out suggesting that there is an air leak but the gasket and body of carb has a routed air bleed.
Still pondering what could be wrong and what to try next?
I've read a couple of posts on here by Mark739 and Olneys.
Earlier today, I stripped down the Kehin BB carb and gave it a cleaning.
There was a great video on YouTube which I followed.
https://www.youtube.com/watch?v=V3S_7XpUioE
At 3:30, he takes a screw out and uses a rod to clean this jet/hole? out.
I used a bread tie and then a paperclip and I could NOT get it to insert into that hole much at all. 1mm. perhaps!
I used copious amounts of carb cleaner and even soaked in parafin for a while.
What does that hole do?
Also, in the video he shows pilot jet, screwed home and then backed out two complete turns. The manual stated 1+5/8 turns but when I removed it. I only counted 5/8 turns.
At first, the slow jet would not come out. It needed a good bash (carb in hand and hitting vertically down on tube which slow jet is in) to free it and allow it to come out. So this indicates it was well gummed up.
The slow jet was cleaned fairly well too.
All rebuilt but now the engine surges. I read a lot of articles on the net and tried various things.
When I sprayed carb cleaner onto packing gasket to cylinder head it smoothed out suggesting that there is an air leak but the gasket and body of carb has a routed air bleed.
Still pondering what could be wrong and what to try next?