[tsubaki]

Normally there is a warm-up lever above the ignition key (or to the left of that) either you lift up (while in neutral only) or have to squeeze and lift up. Other manufacturers have a button to push where the shifter pivots to disengage the forward and reverse to use as a warm-up lever while others you simply advance the throttle forward and the rpm's increase. On those to engage the forward and reverse squeeze the handle and push or pull for forward or reverse.