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USER GUIDE
NOTICE
• Please check that the chain catcher pin of the big chainring aligns with the drive-side crankarm.
• Make sure the chainrings sit at and ght on the 110mm BCD (bolt circle diameter) of the PowerMeter.
• Check chainrings bolts of the SRM ORIGIN PowerMeter are torqued to the correct specicaons:
Shimano chainrings - 12Nm
Other manufacturers - 8Nm (check manufacturer specicaons)
• The drive-side crankarm comes pre-installed at the correct torque specicaon.
WARNING
WARNING
• Ensure frame has a suitable 30mm boom bracket installed when mounng the SRM ORIGIN PowerMeter.
Compable boom brackets can also be purchased from an SRM authorized dealers or our online shop at:
.
• Install Boom Bracket per manufacturers instrucons, ensuring sealing rings are placed properly and bearings
are fully seated and concentric in frame.
• Determine the required spacers for the Drive and Non-Drive side according to your boom bracket type - check
table (Fig. 11).
• Install the corresponding spacers onto the drive side axle (Fig. 1) and apply a small amount of grease to the
contact surfaces of the bearing/axle. Due to ght tolerances the axle/boom bracket can be dicult to install
if not inserted straight. Carefully align the spindle with both bearings and with a slight rocking moon use light
pressure to fully seat crank in the boom bracket. Make sure that the Non-Drive Side boom bracket does not
come loose or even come out of the BB shell.
• Remove the excess grease from the non-drive side of the crank axle and posion the appropriate spacers
according to the table (Fig. 11). When installing the non-drive crank, make sure that the crank is rotated by
180 ° to the drive-side crankarm.
• Apply a light thread locker (violet) to the threads of the axle bolt and slightly ghten with a 10mm allen key
(Fig. 2).
NOTICE
• Unscrew the non drive side crank bolt counterclockwise and place a small drop of light thread locker (violet) on
the threads. Re-torque the bolt to (Fig.3.1).
• Tighten the le axle bolt counterclockwise with a torque of (Fig.3.2).
• Let the thread locker cure for at least 6 hours before use!
• The crank length can get adjusted from 170, 172.5 to 175mm. Make sure you select the correct crank length!
• Degrease and clean the Tri-lobe nut, Tri-lobe washer and the contacng crank surfaces. Dust and/or any other
parcles on the Tri-lobe nut or on the crank could damage the crank or the pedal threads.
• Make sure to use the correct Tri-lobe nut marked with “R“ when installing the Drive-Side pedal (Fig. 5).
• Posion the arrow on the Tri-lobe washer facing the marking of the desired length. Make sure the washer is
aligned correctly and sing ush inside the crank (Fig. 4). Insert the Tri-lobe nut from the backside. Make sure
the holes of the washer and nut are concentric with each other.
• Proceed accordingly with the Tri-lobe nut marked with “L“ on the Non-Drive side crankarm (Fig. 6).
• Tighten the pedals with the recommended torque: (check pedal manufacturer specicaons).
WARNING
PowerMeter
PM-SRM-VAR-AXL-SH4-110-010
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