2022 1/2 Templar X - Page 5

Thumper · 03-25-2023, 11:18 AM

I drilled out the pilot air mixture screw adjustment blockoff and reset to about 2 turns out. I had previously rejet to 42 on the pilot jet, so took others advice and thought 2 turns would be OK.

It was WAY too lean on mine. I closed the air mix to just under 1 turn and it starts/idles great now.

On the Keihin clone Youall smoothbore, this is an airscrew. Opening it adds more air to the mix. So closing it to 1 turn enriched the mixture.

The main clue was popping and backfiring. These are signs of lean mixture. I was thinking CDI or something!

It is HARD to get a screwdriver onto this. On mine it is right behind a frame stay. So I used this 4mm screwdriver bit on a short magnetized extension. This REALLY made adjustment easy:

Click image for larger version

Name: PilotAirMixScrewTool.JPG
Views: 53
Size: 384.5 KB
ID: 28883

Weresquatch · 03-06-2024, 03:32 PM

Quote:

Originally Posted by Thumper

I just got a pack of these jets. Perfect and less than $8 on ebay
*item 334527584998, Description:
"Carburetor Main Jet 10pcs/Set Slow/Pilot Jet Kit For PZ30"
Vendor is shmoto. They arrived in TWO days.

Original 120 main, 40 pilot
installed 125 main, 42 pilot (45 was too rich, didn't need choke in cold weather!)
Attachment 27434

This was *so* helpful. I got this done last night. That was kind of a surprising amount of grinding to pop that bowl free. I only have about an hour or so a night on weekdays to work in my garage. Getting the carb *back* on has been a much bigger PITA then I thought it would be LOL. #GettingThere

03-25-2023, 11:18 AM	#61
Thumper Join Date: Feb 2021 Location: Kansas City Posts: 2,194	I drilled out the pilot air mixture screw adjustment blockoff and reset to about 2 turns out. I had previously rejet to 42 on the pilot jet, so took others advice and thought 2 turns would be OK. It was WAY too lean on mine. I closed the air mix to just under 1 turn and it starts/idles great now. On the Keihin clone Youall smoothbore, this is an airscrew. Opening it adds more air to the mix. So closing it to 1 turn enriched the mixture. The main clue was popping and backfiring. These are signs of lean mixture. I was thinking CDI or something! It is HARD to get a screwdriver onto this. On mine it is right behind a frame stay. So I used this 4mm screwdriver bit on a short magnetized extension. This REALLY made adjustment easy: __________________ -2022 5 speed Templar X Orange, OEM 51T rear sprocket, 14T front sprocket -NOS 2020 KTM 250SX (2-stroke motocross), less than 10 hours on it Last edited by Thumper; 05-11-2023 at 05:58 PM.
	1