HPI Racing Savage XL 5.9 160102 Exploded View
![HPI Racing Savage XL 5.9 160102 Race Kit manual cover](/images/PoSsPmvhMGbSpqAggGdgfYZD/thumbs/thumb175x175.webp)
To break in the engine, start by running the engine at a rich setting with the wheels off the ground for a few tanks. Gradually lean the mixture and run the truck gently for the first few tanks, avoiding full throttle to ensure all parts wear in smoothly.
Use 20-25% nitro fuel for the Savage XL 5.9 for optimal performance. Ensure that the fuel is fresh and the nitro content is suitable for the ambient temperature and humidity conditions.
Overheating can be resolved by ensuring the fuel mixture isn't too lean, checking for air leaks, ensuring proper airflow over the engine, and possibly using a higher nitro content fuel in hot conditions to aid cooling.
After each use, clean any dirt and debris from the chassis, check for loose screws, inspect the air filter and clean or replace it if necessary, and ensure all moving parts are properly lubricated.
Begin with the factory settings and adjust the high-speed needle for maximum RPM at full throttle, then adjust the low-speed needle for smooth idle and quick acceleration. Always make small adjustments and check the engine temperature frequently.
Check the glow plug for functionality, ensure the fuel is reaching the carburetor, check for air leaks, and ensure the engine isn't flooded. If necessary, replace the glow plug and prime the engine correctly.
Adjust the shock oil weight and spring tension to suit the terrain. For rough terrain, use softer suspension settings, and for smooth surfaces, stiffer settings might be preferable to maintain control and handling.
Signs include sluggish acceleration, a noticeable drop in top speed, and unusual noises during acceleration. Inspect the clutch shoes for wear and replace them if they appear worn or damaged.
Consider upgrading to aluminum parts for critical areas like the suspension arms and chassis braces, reinforce the body shell, and regularly inspect and replace worn components to prevent failure during use.
Clean the truck thoroughly, remove fuel from the tank and carburetor, apply after-run oil to the engine, disconnect the batteries, and store the truck in a cool, dry place away from direct sunlight.