I just did mine. I thought the valve lash was fine. It was not. Resetting the valve lash solved many of my rough running issues and improved performance greatly. My advice: before doing anything else, do your valve lash.
Agreed.... Ever since I found this channel forever ago. I have had a better running icebear maddog and a lot better understanding how it's runs. Always my go to when looking for diy maintenance and repair. Now just waiting for that turbo diy video.
So I bought a used maddog 150 with 170bbk in the summer.. after months and months or trying I finally got it running .. thank you for all your videos and advice.. I was ready to give up and sell it.. glad I didn’t .. let me know how I can support the channel .. once again thank you
Update. After watching your video and the part where you say...tightening the nut will slightly change the valve lash, I was in doubt whether my valve lash was really correct. I took my bike apart (valves are hard to reach) and what do you know IN was 0.12 mm and EX was 0.13 mm instead of 0.10 mm (0.04 inch). This time I took more time, remeasured the settings many more times and got it to where 0.10 mm gauge would slide in and 0.11 mm would not). The result is a bike that no longer stalls on a warm engine sfter a quick blip on the gas at idle.
@GhettoWrench I am actually amazed how critical this setting is and how precise one has to be in adjusting the valve lash. These engine do not seem to be very forgiving. My sixteen year old me had a 2 stroke Peugeot 103 moped that did not have valves or cared for a perfectly tuned carb as long as it was fed oil/gas mix.
Be careful if you have an anti kickback device installed on your cam. You cannot go backwards with the engine while adjusting or it will screw up your readings.
@GhettoWrench lol, that was my thoughts about my motor. I have an automatic decompression cam that I’m going to have to dial in the valve lash once I use it. This video helped clear things up because I get recommended different clearances for different cams, but have ended up going with stock settings.
HOW COME YOU HAVEN'T PUT A 2 STROKE ENGINE AND TURNED IT INTO A STROKER LIKE THAT LITTLE THING THE MOZBOYS CHANNEL SURELY YOU WILL GET BEST BOTH WORLDS THAT STROKER GETS TO NEAR A 100MPH IF YOU GET 70 MPH THINK YOU WOULD BE MADE UP CONTACT THE LADS SEE WHAT THEY DID FOR BEST ROUTE GO DOWN MAKE GOOD VIDEOS FOR YOU
I just did mine. I thought the valve lash was fine. It was not. Resetting the valve lash solved many of my rough running issues and improved performance greatly. My advice: before doing anything else, do your valve lash.
@@frednetherlands887 good to hear. I think I work on these more than I ride them and never give the Valves a chance to get out of wack. LOL
@GhettoWrench my scooter now has 12000 km. The last valve lash job was 3000 km ago. It needed a valve lash setting for sure.
@frednetherlands887 oh wow. You ride the hell out of that thing. Like my truck gets all those miles.
this video deserves more views. by far the best tutorial on this stuff. thanks
@@Russianarm thanks
Agreed.... Ever since I found this channel forever ago. I have had a better running icebear maddog and a lot better understanding how it's runs. Always my go to when looking for diy maintenance and repair. Now just waiting for that turbo diy video.
So I bought a used maddog 150 with 170bbk in the summer.. after months and months or trying I finally got it running .. thank you for all your videos and advice.. I was ready to give up and sell it.. glad I didn’t .. let me know how I can support the channel .. once again thank you
@@LuisGallo-r2b Great to hear. Thanks so much for the feedback and support
Update. After watching your video and the part where you say...tightening the nut will slightly change the valve lash, I was in doubt whether my valve lash was really correct. I took my bike apart (valves are hard to reach) and what do you know IN was 0.12 mm and EX was 0.13 mm instead of 0.10 mm (0.04 inch). This time I took more time, remeasured the settings many more times and got it to where 0.10 mm gauge would slide in and 0.11 mm would not). The result is a bike that no longer stalls on a warm engine sfter a quick blip on the gas at idle.
@frednetherlands887 oh that is great.
@GhettoWrench I am actually amazed how critical this setting is and how precise one has to be in adjusting the valve lash. These engine do not seem to be very forgiving. My sixteen year old me had a 2 stroke Peugeot 103 moped that did not have valves or cared for a perfectly tuned carb as long as it was fed oil/gas mix.
Be careful if you have an anti kickback device installed on your cam. You cannot go backwards with the engine while adjusting or it will screw up your readings.
Have you seen the 4 valve versions of these?😎👍
@@DustySteel I heard about them. I prob need that. LOL
@GhettoWrench lol, that was my thoughts about my motor. I have an automatic decompression cam that I’m going to have to dial in the valve lash once I use it. This video helped clear things up because I get recommended different clearances for different cams, but have ended up going with stock settings.
@DustySteel cool
@@GhettoWrench what is the head stud spacing on those engines?
@DustySteel they are 54mm on the 150cc and the 50cc are 50mm
What are these scooters called/brand? I'm looking to get one in The Netherlands, saw one in rotterdam and it sounded awesome!
@@Ergajavaan Maddog. They are made by Icebear.
HOW COME YOU HAVEN'T PUT A 2 STROKE ENGINE AND TURNED IT INTO A STROKER LIKE THAT LITTLE THING THE MOZBOYS CHANNEL SURELY YOU WILL GET BEST BOTH WORLDS THAT STROKER GETS TO NEAR A 100MPH IF YOU GET 70 MPH THINK YOU WOULD BE MADE UP CONTACT THE LADS SEE WHAT THEY DID FOR BEST ROUTE GO DOWN MAKE GOOD VIDEOS FOR YOU
@@christophersherratt7299 I want to! LOL. I was looking at the buddy 50. Do you know the best one to start with?