2011 Marin Sky Trail Step-Thru

Archived: Frame: Aluminum · Fork: Suntour XCM V3, 100mm travel

• Look for dents or shape changes and inspect the edges of welds around the head tube, bottom bracket, seat cluster and suspension mounts for hairline cracks.

Archived: Fork: Suntour XCM V3, 100mm travel

• Inspect the fork stanchions for scratches or coating wear, look for oil or dirt rings at the seals, and cycle the fork through its travel while checking for binding or bushing play.
• Ask for dated fork-service records. A clean exterior does not establish the condition of internal seals, oil or bushings.

Archived: Group: Mountain Mix · Shifters: Shimano EF-40 EZ Fire Integrated · Front derailleur: Shimano TX50 · Rear derailleur: Shimano · Crankset: Alloy MTB · Bottom bracket: Sealed cartridge · Cassette: Shimano · Rear cogs: 7-speed, 14 - 28 teeth · Chain: UG51

• Shift through every available gear under light load. Hesitation, skipping or inconsistent indexing can reflect wear, damage, poor adjustment or mismatched replacement parts.
• Measure chain wear with a compatible gauge and inspect chainring, cassette or freewheel teeth. A new chain does not rule out wear in the remaining drivetrain.
• Turn the cranks slowly, feel for rough bearings and check for side-to-side play. Inspect crank arms, chainring bolts and pedal threads for looseness or damage.

Archived: Brakes: Forged Alloy Linear Pull brakes, Shimano integrated levers

• Inspect pads, cables and housings, then examine both rim braking surfaces for concavity, cracking or heavy wear. Confirm each caliper returns and centers correctly.

Archived: Wheel size: 26" wheels · Rims: Alloy, 36-hole/32-hole · Hubs: Alloy Double Sealed · Front tire: 26 x 1.95" Kenda

• Spin both wheels and watch for side-to-side and vertical movement. Check spoke tension, rim condition and hub play.
• Inspect both tire casings for cuts, cracking, plugs, bulges or exposed threads and confirm the installed sizes are safe for the rims and available frame and fork clearance.

Archived: Headset: 1 1/8" Threadless · Handlebar: 30mm Rise · Stem: Threadless 4 Bolt · Seatpost: Alloy Micro Adjust, 27.2mm diameter · Saddle: Marin Sport Mountain · Pedals: Composite

• Apply the front brake and rock the bike to check for headset play or notchiness. Inspect the stem, handlebar and clamp zones, then confirm every fastener and control is secure.
• Check that the seatpost moves for adjustment and that the saddle, post and clamp hold securely without cracks, severe corrosion or damaged hardware.