You need to pull the head cover to reach the decomp, not the head.
First, make sure the battery cables are not corroded internally... measure voltage at all connection points WHILE trying to start - do you find any large voltage drops? If so this can point to a possible bad cable or connection.
2nd, check valve clearance - too wide and the decomp is rendered ineffective.
If you do pull the head cover also check cam timing - one tooth off in cam timing can sometimes lead to extra compression/starting issues.
'01 660 Raptor, Burgard +2+1 arms, YFZ Shocks, LSR anti-vibe, CTR pipe, jetted, K&N
'01 Polaris Scrambler 400, K&N
'02 Honda 400ex, Big Gun pipe, jetted, K&N, Lonestar +2 A-arms, Lonestar anti-vibe
'04 Suzuki LTZ400
'16 RZR XP4 1000 Turbo
Last edited by QuadManiac; 08-20-2018 at 06:05 PM.