herpindo
Husqvarna
A Class
Today we fitted a Boyesen Quickstart QS3 on one of our team 2010 TC250 bikes. This bolt on trick kit is supposed to serve two purposes: 1) it apparently makes starting hot 4 stroke engines much easier and 2) gives the ability of tuning the Leak Jet by an adjustable screw. The stock Leak Jet for the bike is 35 and we wanted to adjust it to 60 since we had heard good reports for this setting. This meant turning the screw just over 1.5 turns from the closed seated position which is what we did.
we removed the cover off the accelerator pump and were shocked to find the timing screw had ALREADY been modified!!! The nipple at the end of the screw had been removed to reduce the original factory setting gap and tied back with a piece of wire very similar to the O ring mod already mentioned on this forum!!! This apparently increases the petrol spray timing from approximatly every 2 to 3 seconds to every second. So WHO did this as this was a brand new bike just recently imported from Australia??? Well it certainly wasn't the Aussies as I spoke to them about it, so it must have been done in Italy! Maybe the Husky technicians finally realized this and started doing it to the bikes on the production line??? Now IF that was the case and IF some of the test bikes were from an earlier production and didn't have this mod done then this COULD account for some of the inconsistency we are seeing!?!?
OUR RESULTS: First of all the bike was a LOT more DIFFICULT to start!!! Not what Boyesen claims with their money back guarantee!!!
Regarding the power though we noticed a HUGE gain in overall HP especially towards the TOP end!!! In fact the whole ride was MUCH more responsive, noticeably different, AWESOME!!!
CONCLUSION: The Boyesen Quickstart method did NOT work for the TC250. After making sure that the Timing screw mod had been done to reduce the gap to 0.115" (ours already had this probably from the factory) changing the stock 35 Leak jet to 60 GREATLY improves the overall power of the bike especially in the top end!!
I would highly recommend that any serious 2010 TC250 owner opens the AP cover on the float bowel and checks if their Timing Screw has already been modified which is easy to see if it is tied back with a piece of wire, I will post a pic below.
Please post your results to this forum as it is very interesting to know how many bikes have or have not yet had the Timing Screw modified!
WHAT WE WILL TRY NEXT: If we can't get the bike to start more easily we will try a Merge adjustable Leak Jet Kit! I will post the results once we get this far!
Thanks
we removed the cover off the accelerator pump and were shocked to find the timing screw had ALREADY been modified!!! The nipple at the end of the screw had been removed to reduce the original factory setting gap and tied back with a piece of wire very similar to the O ring mod already mentioned on this forum!!! This apparently increases the petrol spray timing from approximatly every 2 to 3 seconds to every second. So WHO did this as this was a brand new bike just recently imported from Australia??? Well it certainly wasn't the Aussies as I spoke to them about it, so it must have been done in Italy! Maybe the Husky technicians finally realized this and started doing it to the bikes on the production line??? Now IF that was the case and IF some of the test bikes were from an earlier production and didn't have this mod done then this COULD account for some of the inconsistency we are seeing!?!?
OUR RESULTS: First of all the bike was a LOT more DIFFICULT to start!!! Not what Boyesen claims with their money back guarantee!!!
Regarding the power though we noticed a HUGE gain in overall HP especially towards the TOP end!!! In fact the whole ride was MUCH more responsive, noticeably different, AWESOME!!!
CONCLUSION: The Boyesen Quickstart method did NOT work for the TC250. After making sure that the Timing screw mod had been done to reduce the gap to 0.115" (ours already had this probably from the factory) changing the stock 35 Leak jet to 60 GREATLY improves the overall power of the bike especially in the top end!!
I would highly recommend that any serious 2010 TC250 owner opens the AP cover on the float bowel and checks if their Timing Screw has already been modified which is easy to see if it is tied back with a piece of wire, I will post a pic below.
Please post your results to this forum as it is very interesting to know how many bikes have or have not yet had the Timing Screw modified!
WHAT WE WILL TRY NEXT: If we can't get the bike to start more easily we will try a Merge adjustable Leak Jet Kit! I will post the results once we get this far!
Thanks