Fix Fault Mower

the throttle on my Honda HF2417 ride on mower does not seem to affect the speed of the engine if its on tortoise or hare despite the throttle moving . What is the problem?

Where can I buy spares for my Power Devil Garden PDG4037R lawn mower. I’m after the power switch inside the power hand trigger.

RE 210 (7800952-01) - Snapper 33" Rear-Engine Riding Mower, 15.5hp My snapper will start with my foot on the brake but dies as soon as I take my foot off the brake or try to engage the blade

I have no ignition light on my Westwood t1200 battery fully charged Model no 286707 ride on mower