Replacement Flywheel for Chainsaw Engines Compatible with Stihl 029 039 MS290 MS390 MS310 Part number 1127 400 1200 Product overview A directfit replacement flywheel designed to restore engine function and stable ignition for the listed chainsaw models. This flywheel matches the specified mounting pattern and part number to serve as a proper substitute during repairs and maintenance. Key benefits Restores reliable ignition and starting: Replaces a damaged or worn flywheel to help maintain consistent spark timing and easier starts. Reduces vibration and improves smoothness: Precisionbalanced design minimizes engine vibration for steadier idle and operation. Durable construction for extended service life: Built to withstand normal operating stresses and rotational loads. Direct replacement fit: Manufactured to match the mounting and keyway configuration of part number 1127 400 1200 for a straightforward installation with no modification required. Practical for repairs and maintenance: Ideal for emergency , routine overhaul, or component replacement during rebuilds. Important attributes Function: Flywheel for engine ignition and rotational energy storage to support smooth combustion cycles and consistent timing. Compatibility: Compatible with Stihl models 029, 039, MS290, MS390, MS310. Matches part number 1127 400 1200. Fit and finish: Machined to align with factory mounting points and keyway to ensure proper seating and secure fastening. Material and durability: Constructed from strength metal with a finish to resist wear under normal use. Performance: Balanced to reduce vibration and help maintain stable engine RPM during idle and load. Installation and use Designed as a bolton replacement that aligns with existing crankshaft taper and keyway. Recommended to install with correct torque on mounting hardware and to verify magnet and ignition coil air gap per service guidelines for the chainsaw model. Inspect related components such as flywheel key, starter clutch, and ignition coil during installation to ensure operation. Typical applications a cracked, chipped, or magnetdamaged flywheel after accidental impact or drop. a saw to reliable operation during routine engine maintenance or overhaul. Rebuild a used chainsaw to restore consistent starting and stable idle performance. What to expect A functional replacement part that aligns with the specified part number and compatible models to help bring affected chainsaws back to dependable operation. For safe and correct installation follow the chainsaw model service procedures and use appropriate tools. Compatibility summary Fits chainsaw models 029 039 MS290 MS390 MS310 and corresponds to part number 1127 400 1200.